[SalesForce] Hyperlink function in formula field results in HL_ENCODED text

I want to create hyperlink text on Long Text Area field.While creating a flow I used following link in formula field.
hyperlink("https://.my.salesforce.com/a021100000GblsrAAB/a0311000007oFjp",{!RelatedAcc.Name})
and updating a long text area field on Account object
It displays the link in following text format.
_HL_ENCODED_https%3A%2F%2.com_HL_Test+Case_HL__blank_HL_.

Instead of link it displays _HL_ENCODED_ and _HL__blank_HL_ . Is there any way out to display the link on long text area field on multiple text link using flow. For example Test Case1, Test Case2

Best Answer

Create a Variable in flow and insert "https://.my.salesforce.com/a021100000GblsrAAB/a0311000007oFjp" as variable value.

After that while updating field use Variable name instead of direct link.